@article{JSFU_2020_13_3_a9,
     author = {Alexander V. Loboda and Ripsime S. Akopyan and Vladislav V. Krutskikh},
     title = {On the orbits of nilpotent 7-dimensional lie algebras in 4-dimensional complex space},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {360--372},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2020_13_3_a9/}
}